A magnitude ML 1.3 earthquake occured in region: 4 km S Arquata del Tronto (AP), on
and geographic coordinates (lat, lon) 42.7360, 13.2940 at 16 km depth.
The earthquake was located by: Sala Sismica INGV-Roma.
Search earthquakes: Any within 30 km radius
The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.
Municipality | Region | Distance (km) | Inhabitants | Cumulative Inhabitants |
---|---|---|---|---|
Arquata del Tronto | AP | 4 | 1178 | 1178 |
Accumoli | RI | 6 | 667 | 1845 |
Acquasanta Terme | AP | 10 | 2916 | 4761 |
Amatrice | RI | 12 | 2657 | 7418 |
Montegallo | AP | 12 | 523 | 7941 |
Valle Castellana | TE | 17 | 977 | 8918 |
Cittareale | RI | 17 | 482 | 9400 |
Norcia | PG | 18 | 4957 | 14357 |
Montemonaco | AP | 19 | 604 | 14961 |
Rocca Santa Maria | TE | 20 | 537 | 15498 |
Type | Magnitude | Date and Time (UTC) | Latitude | Longitude | Depth (km) | Published time (UTC) | Author | Location ID |
---|---|---|---|---|---|---|---|---|
Reviewed Rev100 |
ML 1.3 | 2021-10-21 04:28:27 |
42.7357 | 13.2938 | 16 | 2021-10-21 04:35:43 |
Sala Sismica INGV-Roma | 96823491 |
Field | Value |
---|---|
Time (UTC) | 2021-10-21 04:28:27 ± 0.2 |
Latitude | 42.7357 ± 0.0063 |
Longitude | 13.2938 ± 0.0073 |
Depth (km) | 16 ± 2 (from location) |
Evaluation mode of Origin | manual |
Evaluation status of Origin | reviewed |
Version | 100 -> SURVEY-INGV |
Event type | earthquake |
Origin ID | 96823491 |
Field | Value |
---|---|
Preferred uncertainty description | uncertainty ellipse |
Semi-major axis of confidence ellipse (meter) | 724 |
Semi-minor axis of confidence ellipse (meter) | 387 |
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) | 50 |
Circular confidence region, given by single value of horizontal uncertainty (meter) | 720.0 |
Confidence level of the uncertainty (%) | 68 |
Field | Value |
---|---|
Largest azimuthal gap in station distribution as seen from epicenter (degree) | 143 |
Number of associated phases, regardless of their use for origin computation | 24 |
Number of defining phases | 14 |
RMS of the travel time residuals of the arrivals used for the origin computation (sec) | 0.19 |
Epicentral distance of station closest to the epicenter (degree) | 0.00000 |
Epicentral distance of station farthest from the epicenter (degree) | 0.33635 |
Number of stations at which the event was observed | 17 |
Number of stations from which data was used for origin computation | 7 |
Field | Value |
---|---|
Value | 1.3 |
Uncertainty | 0.3 |
Num. used stations | 12 |
Type of magnitude | ML |
Reference to an origin | 96823491 |
Agency | INGV |
Autore | Sala Sismica INGV-Roma |
Time of creation (UTC) | 2021-10-21 04:35:43 |
SCNL | Time | Uncertainty | Polarity | Evaluation_mode | Phase | Azimuth | Distance(km) | Takeoff_angle | Residual | Weight |
---|---|---|---|---|---|---|---|---|---|---|
IV.TDS.HHZ. | 2021-10-21T04:30:10.80 | 3.0 | undecidable | manual | Sn | -0.26 | 0 | |||
MN.CLTB.HHZ. | 2021-10-21T04:29:48.36 | 3.0 | positive | manual | Pg | 8.15 | 0 | |||
IV.MNTV.EHZ. | 2021-10-21T04:29:44.59 | 3.0 | undecidable | manual | Sn | -0.76 | 0 | |||
IV.BRMO.HHZ. | 2021-10-21T04:29:42.40 | 3.0 | undecidable | manual | Pg | 14.79 | 0 | |||
IV.EUCT.HNZ. | 2021-10-21T04:29:33.75 | 3.0 | negative | manual | Pg | 12.63 | 0 | |||
RF.GEPF.HHZ. | 2021-10-21T04:29:23.61 | 3.0 | negative | manual | Pg | 4.68 | 0 | |||
IV.CMPR.HHZ. | 2021-10-21T04:29:14.98 | 3.0 | undecidable | manual | Pg | 4.5 | 0 | |||
IV.MTMR.EHZ. | 2021-10-21T04:29:03.06 | 3.0 | negative | manual | Pn | 1.02 | 0 | |||
IV.VISG.HHZ. | 2021-10-21T04:28:56.32 | 3.0 | undecidable | manual | Pn | 0.88 | 0 | |||
IV.FDMO.HHZ. | 2021-10-21T04:28:39.67 | 0.6 | undecidable | manual | S | 333 | 37.3293 | 100 | -0.18 | 48 |
IV.MF5.EHZ. | 2021-10-21T04:28:38.56 | 0.6 | undecidable | manual | S | 26 | 31.0467 | 103 | 0.36 | 46 |
IV.TERO.HHZ. | 2021-10-21T04:28:37.19 | 0.6 | undecidable | manual | S | 116 | 28.2495 | 105 | -0.27 | 48 |
IV.MC2.EHZ. | 2021-10-21T04:28:35.95 | 0.6 | undecidable | manual | S | 336 | 21.2676 | 113 | 0.23 | 48 |
IV.MMO1.EHZ. | 2021-10-21T04:28:34.52 | 0.6 | undecidable | manual | S | 8 | 18.3705 | 118 | -0.49 | 46 |
IV.NRCA.HHZ. | 2021-10-21T04:28:34.92 | 0.1 | undecidable | manual | S | 307 | 18.2706 | 119 | -0.06 | 100 |
IV.FDMO.HHZ. | 2021-10-21T04:28:34.44 | 1.0 | negative | manual | P | 333 | 37.3293 | 100 | -0.11 | 24 |
IV.SRES.HHZ. | 2021-10-21T04:28:34.43 | 3.0 | undecidable | manual | P | -1.73 | 0 | |||
IV.SMA1.EHZ. | 2021-10-21T04:28:33.69 | 0.6 | undecidable | manual | S | 164 | 12.1767 | 133 | 0.03 | 51 |
IV.TERO.HHZ. | 2021-10-21T04:28:33.02 | 0.6 | undecidable | manual | P | 116 | 28.2495 | 105 | -0.16 | 49 |
IV.MF5.EHZ. | 2021-10-21T04:28:33.82 | 0.3 | positive | manual | P | 26 | 31.0467 | 103 | 0.22 | 71 |
IV.MC2.EHZ. | 2021-10-21T04:28:32.26 | 0.6 | positive | manual | P | 336 | 21.2676 | 113 | 0.09 | 50 |
IV.SMA1.EHZ. | 2021-10-21T04:28:31.30 | 0.6 | positive | manual | P | 164 | 12.1767 | 133 | 0.32 | 49 |
IV.MMO1.EHZ. | 2021-10-21T04:28:31.62 | 0.3 | undecidable | manual | P | 8 | 18.3705 | 118 | -0.14 | 75 |
IV.NRCA.HHZ. | 2021-10-21T04:28:31.80 | 0.3 | undecidable | manual | P | 307 | 18.2706 | 119 | 0.06 | 76 |
SCNL | mag | Generic_amplitude | Period | Type | Category | Unit | Time_window_reference |
---|---|---|---|---|---|---|---|
IV.SMA1.EHN. | ML:1.2 | 0.00012825 | 1.68 | AML | other | m | 2021-10-21T04:28:33.96 |
IV.SMA1.EHE. | ML:1.1 | 0.00009894999999999999 | 1.84 | AML | other | m | 2021-10-21T04:28:34.04 |
IV.NRCA.HHN. | ML:1.1 | 0.0000863 | 0.34 | AML | other | m | 2021-10-21T04:28:35.10 |
IV.NRCA.HHE. | ML:1.2 | 0.00009855 | 0.06 | AML | other | m | 2021-10-21T04:28:35.30 |
IV.SRES.HHN. | ML:1.6 | 0.00005535 | 0.62 | AML | other | m | 2021-10-21T04:28:36.42 |
IV.CSP1.EHN. | ML:1.7 | 0.00015000000000000001 | 0.94 | AML | other | m | 2021-10-21T04:28:37.25 |
IV.CSP1.EHE. | ML:1.6 | 0.00012705 | 0.52 | AML | other | m | 2021-10-21T04:28:38.31 |
IV.SRES.HHE. | ML:1.6 | 0.000050199999999999994 | 1.6 | AML | other | m | 2021-10-21T04:28:43.83 |
IV.NRCA.HNE. | ML:1.3 | 0.00013633422000000001 | 0.6496 | AML | other | m | 2021-10-21T04:28:39.63 |
IV.NRCA.HNN. | ML:1.4 | 0.00018737569999999998 | 1.2 | AML | other | m | 2021-10-21T04:28:45.18 |
IV.TERO.HHE. | ML:1.0 | 0.000047204759999999996 | 0.5792 | AML | other | m | 2021-10-21T04:28:46.19 |
IV.TERO.HHN. | ML:0.6 | 0.000018138664999999997 | 0.1184 | AML | other | m | 2021-10-21T04:28:38.29 |